title: Polarization characteristics of photonic crystal fibers selectively filled with metal wires into cladding air holes.
abstract: We numerically investigate the polarization characteristics of photonic crystal fibers selectively filled with metal wires into cladding air holes, through a full-vector modal solver based on the finite-element method (FEM). Firstly, we investigate the fundamental coupling properties between the core guided light and surface plasmon polaritons (SPPs) excited on the surface of metal wire. Secondly, we show that we can obtain highly polarization-dependent transmission characteristics in PCFs by introducing several metal wires closely aligned into the cladding, and reveal the strongly polarization-dependent coupling properties between the core guided modes and the SPP supermodes, which consist of discrete SPP modes. Finally, we show the importance of arranging the metal wires close to each other for high polarization-dependence.
authors.affiliation: Division of Media and Network Technologies, Graduate School of Information Science and Technology, Hokkaido University, Sapporo 060-0814, Japan. nagasaki@icp.ist.hokudai.ac.jp
authors.forename: Akira
authors.initials: A
authors.lastname: Nagasaki
authors.forename: Kunimasa
authors.initials: K
authors.lastname: Saitoh
authors.forename: Masanori
authors.initials: M
authors.lastname: Koshiba